High-magnetic-energy-product neodymium-iron-boron magnet preparation device

Abstract

The utility model relates to the technical field of metallurgical equipment, in particular to a high-magnetic-energy-product neodymium iron boron magnet preparation device. According to the technical scheme, the furnace comprises a furnace body, a smashing box and smashing fins for smashing materials are arranged in the furnace body, and the furnace further comprises a first material collecting barrel and a second material collecting barrel which are installed at the bottom of the furnace body. According to the utility model, the crushing box, the crushing fins, the screening mechanism, the conveying mechanism and other structures are matched, so that the crushed high-magnetic-energy-product neodymium-iron-boron magnet with too large particles is screened out and then crushed again, larger particles are prevented from being generated during processing, the density difference caused by different sizes of the particles is reduced, and the quality of the neodymium-iron-boron magnet is improved. Therefore, more uniform density distribution can be formed in the sintering process. Meanwhile, uniform and small particles are easier to sinter, and the required density can be achieved at a low temperature within a short time. Therefore, energy is saved, and thermal stress and deformation risks in the sintering process are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a device for preparing a high magnetic energy product neodymium iron boron magnet. Background Art

[0002] High magnetic energy product NdFeB magnet is a rare earth permanent magnet material with excellent performance. It is characterized by a very high magnetic energy product, which means that it can store and release a large amount of magnetic energy. When preparing high magnetic energy product NdFeB magnet, the raw materials are melted at high temperature and quickly cooled to form a microcrystalline structure. Then the alloy block after rapid quenching is crushed into fine powder. Finally, the next step of processing is carried out. For example, the rapid quenching permanent magnet powder preparation device disclosed in the Chinese patent with announcement number CN118173372A, after the equipment crushes the material, there will be grains of different sizes, so that in the subsequent processing and sintering process, the magnet material needs to be combined into a whole by high temperature and pressure. Excessively large particles will increase the difficulty of sintering, and then problems such as poor bonding, pores or cracks will occur, reducing the quality of the final product. Utility Model Content

[0003] The purpose of the utility model is to solve the problem that after the equipment crushes the material, there will be different grain sizes, so that in the subsequent processing and sintering process, the magnet material needs to be combined into a whole through high temperature and pressure. Too large particles will increase the difficulty of sintering, and then there will be problems such as poor combination, pores or cracks, which will reduce the quality of the final product. A high magnetic energy product NdFeB magnet preparation device is proposed.

[0004] The technical solution of the utility model: a high magnetic energy NdFeB magnet preparation device includes a furnace body, wherein a crushing box and crushing fins for crushing materials are arranged inside the furnace body, and further includes: a first material receiving barrel and a second material receiving barrel installed at the bottom of the furnace body, wherein a screening mechanism is arranged inside the furnace body for screening the crushed materials and introducing them into the first material receiving barrel and the second material receiving barrel respectively; and a feeding mechanism is arranged on the furnace body for repeatedly crushing the materials in the second material receiving barrel.

[0005] Optionally, the screening mechanism includes an installation cavity opened in the furnace body, a vibration motor is fixedly connected to the interior of the installation cavity, a first material receiving bucket is movably connected to the top of the installation cavity, an inclined vibration filter plate is provided inside the furnace body directly below the crushing box, and a pair of material guide ports are opened at the bottom of the furnace body, one of which is connected to the first material receiving bucket, and the other is connected to the second material receiving bucket.

[0006] Optionally, an inclined support block is fixedly connected to the interior of the furnace body, a support rod is fixedly connected to the inclined surface of the inclined support block, and the top end of the support rod is rotatably connected to the vibration filter plate.

[0007] Optionally, the upper surface of the vibration filter plate is provided with a mixed material, the interior of the first material receiving barrel and the material guide port directly above it are both provided with small particle materials, and the interior of the second material receiving barrel and the material guide port directly above it are both provided with large particle materials.

[0008] Optionally, the feeding mechanism includes a vacuum pump arranged on the furnace body, the vacuum pump is provided with a feeding pipe and a suction pipe, the furnace body is provided with a feeding port directly above the crushing box, one end of the feeding pipe is movably passed through the furnace body and is fixedly connected to the feeding pipe, one end of the feeding pipe away from the feeding pipe is fixedly connected to the feeding port, and one end of the suction pipe away from the vacuum pump is movably passed through the second material receiving barrel.

[0009] Optionally, the top cross-section of the first material receiving barrel is set to be triangular, and the gap between the first material receiving barrel and the installation cavity is used to prevent material particles from passing through.

[0010] Optionally, the inclined surface provided on the inclined support block is used to guide the material screened and fallen thereon into the first material receiving barrel.

[0011] Compared with the prior art, the utility model has the following beneficial technical effects:

[0012] The utility model utilizes the coordination of structures such as a crushing box, crushing fins, a screening mechanism, and a feeding mechanism to screen out high magnetic energy product NdFeB magnets with large particles after crushing and then crush them again, so as to avoid the presence of large particles during processing and reduce the density difference caused by different particle sizes, thereby helping to form a more uniform density distribution during the sintering process. At the same time, uniform and smaller particles are easier to sinter, and can achieve the required density at a lower temperature and in a shorter time. This not only saves energy, but also reduces the risk of thermal stress and deformation during the sintering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of a high magnetic energy product NdFeB magnet preparation device of the utility model is given;

[0014] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0015] Figure 3 for Figure 1 A magnified schematic diagram of point B in the middle.

[0016] Figure numerals: 1. furnace body; 2. crushing box; 3. crushing fins; 4. feed port; 5. feed pipe; 6. large particle material; 7. small particle material; 8. vibration filter plate; 9. feed pipe; 10. vacuum pump; 11. installation cavity; 12. vibration motor; 13. first collecting barrel; 14. second collecting barrel; 15. suction pipe; 16. tilting support block; 17. support rod; 18. mixed material; 19. material guide port. DETAILED DESCRIPTION

[0017] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0018] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0019] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] It should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Example

[0024] like Figure 1-3 As shown, the high magnetic energy product NdFeB magnet preparation device proposed by the utility model includes a furnace body 1, and a crushing box 2 and crushing fins 3 for crushing materials are arranged inside the furnace body 1. It also includes: a first material receiving barrel 13 and a second material receiving barrel 14 installed at the bottom of the furnace body 1, and a screening mechanism is arranged inside the furnace body 1 for screening the crushed materials and introducing them into the first material receiving barrel 13 and the second material receiving barrel 14 respectively; a feeding mechanism is arranged on the furnace body 1 for repeatedly crushing the materials in the second material receiving barrel 14.

[0025] Furthermore, the screening mechanism includes an installation cavity 11 provided in the furnace body 1, and a vibration motor 12 is fixedly connected inside the installation cavity 11. The vibration motor 12 is an electric motor capable of generating vibration. It is usually composed of a rotating component and an eccentric wheel. When the motor is running, the asymmetry of the eccentric wheel causes the vibration of the rotating component. This vibration can be transmitted to the equipment or system connected to the motor for implementing operations such as stirring, conveying, and screening. A first material receiving barrel 13 is movably connected to the top of the installation cavity 11. The top profile of the first material receiving barrel 13 is set to be a triangle. The function of the triangle is to make the material on the first material receiving barrel 13 slide downward through vibration and under the action of gravity, so as to prevent the material from accumulating on the first material receiving barrel 13. The gap between the first material receiving barrel 13 and the installation cavity 11 is used to prevent material particles from passing through, and the function is to prevent the crushed material particles from being stuck in the gap between the first material receiving barrel 13 and the installation cavity 11, which will cause the vibration mechanism to fail to operate normally. An inclined vibration filter plate 8 is provided inside the furnace body 1, directly below the crushing box 2, and a plurality of filtering holes are provided on the vibration filter plate 8. A pair of material guide ports 19 are provided at the bottom of the furnace body 1 , one of the material guide ports 19 is communicated with the first material receiving barrel 13 , and the other of the material guide ports 19 is communicated with the second material receiving barrel 14 .

[0026] The furnace body 1 is fixedly connected with an inclined support block 16, and the inclined surface provided on the inclined support block 16 is used to guide the material screened thereon into the first material receiving bucket 13, and the function of the inclined surface is to make the material slide into the first material receiving bucket 13 by gravity. A support rod 17 is fixedly connected to the inclined surface of the inclined support block 16, and the top end of the support rod 17 is rotatably connected to the vibration filter plate 8.

[0027] Secondly, the upper surface of the vibration filter plate 8 is provided with a mixed material 18, the interior of the first material receiving barrel 13 and the material guide port 19 directly above it are both provided with small particle materials 7, and the interior of the second material receiving barrel 14 and the material guide port 19 directly above it are both provided with large particle materials 6.

[0028] Furthermore, the feeding mechanism includes a vacuum pump 10 disposed on the furnace body 1. The vacuum pump 10 is a device for extracting gas and establishing a lower pressure inside a container or system. The vacuum pump 10 can be used for material transportation. By generating negative pressure, the vacuum pump can suck materials from one place and transport them to another place. The vacuum pump 10 is provided with a feeding pipe 9 and a suction pipe 15. A feeding port 4 is provided on the furnace body 1 just above the crushing box 2. One end of the feeding pipe 9 movably passes through the furnace body 1 and is fixedly connected to a feeding pipe 5. The end of the feeding pipe 5 away from the feeding pipe 9 is fixedly connected to the feeding port 4. The end of the suction pipe 15 away from the vacuum pump 10 movably passes through the second receiving barrel 14.

[0029] In this embodiment, when a high magnetic energy product NdFeB magnet preparation device is required, Figure 1 As shown, the material flowing into the crushing box 2 is crushed by the crushing fins 3, and then the mixed material 18 slides onto the vibration filter plate 8. By starting the vibration motor 12 in the installation cavity 11, the vibration motor 12 drives the first material receiving barrel 13 to vibrate after running, and the top of the first material receiving barrel 13 drives the vibration filter plate 8 to vibrate through the support of the support rod 17, so that the mixed material 18 falling onto the vibration filter plate 8 can be vibrated and screened. The mixed material 18 smaller than the aperture of the vibration filter plate 8 will pass through the vibration filter plate 8 and fall into the first material receiving barrel 13 to accumulate into small particles 7. The mixed material 18 larger than the aperture of the vibration filter plate 8 will slowly move toward the second material receiving barrel 14 through the vibration filter plate 8 because the vibration filter plate 8 is placed obliquely in the furnace body 1, and finally slide into the second material receiving barrel 14 to accumulate into large particles 6. However, since the material particles in the second material receiving barrel 14 are relatively large, the vacuum pump 10 on the furnace body 1 can be started. After the vacuum pump 10 is started, the large particles 6 in the second material receiving barrel 14 are transported to the inside of the crushing box 2 through the suction pipe 15 through the conveying pipe 9, the feeding pipe 5 and the feeding port 4 for crushing. Finally, the large particles 6 in the second material receiving barrel 14 are crushed to a size that can pass through the vibrating filter plate 8, which is convenient and quick.

[0030] The preferred embodiments of the utility model of the above utility model are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for preparing a high magnetic energy product NdFeB magnet, comprising a furnace body (1), wherein a crushing box (2) and crushing fins (3) for crushing materials are arranged inside the furnace body (1), characterized in that: Also includes: A first material receiving barrel (13) and a second material receiving barrel (14) are installed at the bottom of the furnace body (1), and a screening mechanism is provided inside the furnace body (1) for screening the crushed materials and introducing them into the first material receiving barrel (13) and the second material receiving barrel (14) respectively; A feeding mechanism is arranged on the furnace body (1) for repeatedly crushing the material in the second material receiving barrel (14).

2. The high magnetic energy product NdFeB magnet preparation device according to claim 1, characterized in that: The screening mechanism comprises an installation cavity (11) provided in a furnace body (1), a vibration motor (12) being fixedly connected to the interior of the installation cavity (11), a first material receiving barrel (13) being movably connected to the top of the installation cavity (11), an inclined vibration filter plate (8) being provided in the interior of the furnace body (1) just below the crushing box (2), a pair of material guide ports (19) being provided at the bottom of the furnace body (1), one of the material guide ports (19) being connected to the first material receiving barrel (13), and the other of the material guide ports (19) being connected to the second material receiving barrel (14).

3. The high magnetic energy product NdFeB magnet preparation device according to claim 1, characterized in that: An inclined support block (16) is fixedly connected inside the furnace body (1), a support rod (17) is fixedly connected to the inclined surface of the inclined support block (16), and the top end of the support rod (17) is rotatably connected to the vibration filter plate (8).

4. The high magnetic energy product NdFeB magnet preparation device according to claim 2, characterized in that: The upper surface of the vibration filter plate (8) is provided with a mixed material (18), the interior of the first material receiving barrel (13) and the material guide port (19) directly above it are both provided with small particle materials (7), and the interior of the second material receiving barrel (14) and the material guide port (19) directly above it are both provided with large particle materials (6).

5. The high magnetic energy product NdFeB magnet preparation device according to claim 1, characterized in that: The feeding mechanism comprises a vacuum pump (10) arranged on the furnace body (1), the vacuum pump (10) is provided with a feeding pipe (9) and a suction pipe (15), a feeding port (4) is provided on the furnace body (1) directly above the crushing box (2), one end of the feeding pipe (9) movably passes through the furnace body (1) and is fixedly connected to a feeding pipe (5), one end of the feeding pipe (5) away from the feeding pipe (9) is fixedly connected to the feeding port (4), and one end of the suction pipe (15) away from the vacuum pump (10) movably passes through a second material receiving barrel (14).

6. The high magnetic energy product NdFeB magnet preparation device according to claim 2, characterized in that: The top cross-section of the first material receiving barrel (13) is arranged to be triangular, and the gap between the first material receiving barrel (13) and the installation cavity (11) is used to prevent material particles from passing through.

7. The high magnetic energy product NdFeB magnet preparation device according to claim 3, characterized in that: The inclined surface provided on the inclined support block (16) is used to guide the material screened and dropped thereon into the first material receiving barrel (13).

Images